Recent Trends in In Situ Observation Methods of Grease Lubrication in EHL

Abstract

In situ observation methods of grease lubrication from micro to macro were introduced. The latest researches on the behavior of thickener and the phenomenon of thickening at very low speeds were introduced, with particular emphasis on in situ observation by infrared spectroscopy. In addition, several methods of in situ observation, which has not yet been applied to grease lubrication but is expected to be used in the future, were also mentioned.